DE102012019135B4 - Electromagnetically actuated brake with one brake coil - Google Patents

Abstract

Electromagnetically actuated brake with a brake coil,wherein the brake coil has a brake rotor shaft which is arranged so as to be rotatable relative to the brake coil,wherein the brake rotor shaft axis is coaxial with the axis of symmetry of the brake coil, i.e. brake coil axis,wherein the brake coil has a plurality of partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52),wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction around the brake coil axis,wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged in a circular arrangement around the brake coil axis,wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction and have a different winding direction to the respective next adjacent partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) in the circumferential direction, so that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) with a first winding direction form a first type and the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) with the opposite winding direction form a second type, characterized in that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are formed by at least a first wave winding and a second wave winding,wherein each of the two wave windings is laid out circumferentially,wherein the radial distance of each of the two wave windings is a periodic function of the circumferential angle,-wherein the first and second wave windings are of the same type but are offset from one another in the circumferential direction,-and/orwherein the second wave winding is inverted to the first with respect to a circle whose radial distance corresponds to the mean value of the maximum and minimum radial distance of the function,wherein the periodic function is a rectangular function with rounded corner regions,wherein the first wave winding is arranged in a first axial region and the second wave winding is arranged in a different axial region which is spaced from the first axial region or at most borders on it but does not overlap.

Description

The invention relates to an electromagnetically actuated brake with a brake coil.

It is well known that brake coils of electromagnetically actuated brakes have a toroidal coil to generate a magnetic field.

From the PCT/ EP2010/006747 ( WO 2011/063889 A1 ) a brake coil arrangement is known which is composed of several partial coils arranged one behind the other in the circumferential direction, so that a reduced leakage flux is achieved.

From the WO 2011/063889 A1 An electromagnetically operated brake is known.

From the US 4 626 814 A A fast-acting electromagnetic actuator is known.

From the DE 101 19 636 A1 An electromagnetically released spring-applied brake with several release magnets is known.

From the US 1 484 090 A A magnetic drive is known.

From the FR 2 778 266 A1 A rectangular winding with ferromagnetic cores is known.

The invention is therefore based on the object of developing an electromagnetically actuated brake with a brake coil, whereby a simple, cost-effective design can be achieved.

According to the invention, the object is achieved in the electromagnetically actuated brake with a brake coil according to the features specified in claim 1 or 4.

• wobei die Bremsspule mehrere Teilspulen aufweist, insbesondere wobei die Teilspulen um die Bremsspulenachse in Umfangsrichtung herum hintereinander angeordnet sind, insbesondere wobei die Teilspulen in einer kreisförmigen Anordnung um die Bremsspulenachse angeordnet sind,
• wobei die Teilspulen in Umfangsrichtung hintereinander angeordnet sind und zur jeweils in Umfangsrichtung nächstbenachbarten Teilspule einen unterschiedlichen Wicklungssinn aufweisen, so dass die Teilspulen mit einem ersten Wicklungssinn eine erste Sorte und die Teilspulen mit dem entgegengesetzten Wicklungssinn eine zweite Sorte bilden,
• insbesondere wobei kein resultierender Kreisstrom gebildet ist,
• wobei die Teilspulen durch zumindest eine erste Wellenwicklung und eine zweite Wellenwicklung gebildet sind,
• wobei jede der beiden Wellenwicklungen in Umfangsrichtung umlaufend verlegt ist, wobei der Radialabstand der jeder der beiden Wellenwicklungen eine periodische Funktion des Umfangswinkels ist,
• insbesondere wobei jeder der beiden Wellenwicklungen einen in Umfangsrichtung umlaufend verlegten Wicklungsdraht aufweist, dessen Radialabstand eine periodische Funktion des Umfangswinkels ist,
  • - wobei die erste und zweite Wellenwicklung gleichartig ausgeführt sind, aber zueinander einen Versatz in Umfangsrichtung aufweisen,
  • - und/oder wobei die zweite Wellenwicklung zur ersten invertiert ist bezogen auf einen Kreis, dessen Radialabstand dem Mittelwert aus maximalem und minimalem Radialabstand der Funktion entspricht, insbesondere so, dass die erste Wellenwicklung den minimalen Radialabstandswert aufweist bei denjenigen Umfangswinkelwerten, bei denen die zweite Wellenanordnung den maximalen Radialabstandswert aufweist.

Important features of the invention in the electromagnetically actuated brake with a brake coil are that the brake coil has a brake rotor shaft arranged to rotate relative to the brake coil, in particular wherein the brake rotor shaft axis is coaxial with the symmetry axis of the brake coil, i.e. brake coil axis,

• wherein the brake coil has a plurality of partial coils, in particular wherein the partial coils are arranged one behind the other in the circumferential direction around the brake coil axis, in particular wherein the partial coils are arranged in a circular arrangement around the brake coil axis,
• wherein the partial coils are arranged one behind the other in the circumferential direction and have a different winding direction to the respective next adjacent partial coil in the circumferential direction, so that the partial coils with a first winding direction form a first type and the partial coils with the opposite winding direction form a second type,
• in particular wherein no resulting circulating current is formed,
• wherein the partial coils are formed by at least a first wave winding and a second wave winding,
• wherein each of the two wave windings is laid circumferentially, wherein the radial distance of each of the two wave windings is a periodic function of the circumferential angle,
• in particular, wherein each of the two wave windings has a winding wire laid circumferentially, the radial distance of which is a periodic function of the circumferential angle,
  • - wherein the first and second wave windings are of the same design, but are offset from one another in the circumferential direction,
  • - and/or wherein the second wave winding is inverted to the first with respect to a circle whose radial distance corresponds to the mean value of the maximum and minimum radial distance of the function, in particular such that the first wave winding has the minimum radial distance value at those circumferential angle values at which the second wave arrangement has the maximum radial distance value.

The advantage here is that a winding arrangement that is easy to manufacture is achieved by laying the winding wire with a periodically varying radial distance in the circumferential direction, meaning that there is no need to reverse the direction for each partial coil. In addition, only two such windings that are easy to manufacture are necessary. This means that a brake coil that is easy to manufacture can be produced.

In an advantageous embodiment, the periodic function is a rectangular function, in particular with rounded corner areas. The advantage here is that the largest possible winding surface can be covered.

In an advantageous embodiment, the first wave winding is arranged in a first axial region and the second wave winding in a different axial region, which is spaced from the first axial region or at most borders on it, but in particular does not overlap. The advantage here is that the Winding strands do not have to be next to each other in the circumferential direction, but can even be arranged in the same circumferential angle range. This means that a large number of partial coils can be arranged in the circumferential direction and therefore a high winding density can be achieved.

In an advantageous embodiment, each partial coil is directly connected to its next adjacent partial coil in the circumferential direction at least via two winding wire sections, in particular whereby the winding wire sections each run directly between the partial coil windings without being routed via other partial coil windings. The advantage here is that a resulting circular current along the circumferential direction of the brake coil can be avoided. This is because the connection via two winding wire sections means that the same number of winding wires always run on the radial inside and on the radial outside and the radial insides of partial coils or outer sides of partial coils that are closest to each other in the circumferential direction have the opposite current flow direction to each other. Therefore, there is no resulting circular current and the stray field is therefore negligible.

In an advantageous embodiment, the first wave winding is arranged in an axial region that differs from the axial region in which the second wave winding is arranged. The advantage here is that an overlap of the next adjacent winding sides of partial coils, viewed in the circumferential direction, is possible.

• wobei die Bremsspule mehrere Teilspulen aufweist, insbesondere wobei die Teilspulen um die Bremsspulenachse in Umfangsrichtung herum hintereinander angeordnet sind, insbesondere wobei die Teilspulen in einer kreisförmigen Anordnung um die Bremsspulenachse angeordnet sind,
• wobei die Teilspulen in Umfangsrichtung hintereinander angeordnet sind und zur jeweils in Umfangsrichtung nächstbenachbarten Teilspule einen unterschiedlichen Wicklungssinn aufweisen,
• wobei die Bremsspule eine die Teilspulen bildende und/oder umfassende Schleifenwicklung, insbesondere bei welcher die Teilspulen elektrisch parallelgeschaltet sind, aufweist,
• insbesondere wobei die Schleifenwicklung in Umfangsrichtung überlappend ausgeführt ist, insbesondere wobei also ein von einer jeweiligen Teilspule überdeckter Umfangswinkelbereich mit dem von der in Umfangsrichtung nächstbenachbarten Teilspule in Umfangsrichtung überdeckten Umfangswinkelbereich überlappt,
• insbesondere wobei die Anordnung der Teilspulen aus zwei Teilspulen-Anordnungen zusammengesetzt ist, wobei die Teilspulen mit Ausnahme des Wicklungssinns gleichartig aufgebaut und die Anordnungen in Umfangsrichtung gegeneinander verdreht sind, wobei der Umfangswinkelversatz in Umfangsrichtung die Hälfte des Winkelabstandes zweier in Umfangsrichtung nächstbenachbarten Teilspulen beträgt.

Important features of the electromagnetically actuated brake with a brake coil according to claim 4 are that the brake coil has a brake rotor shaft arranged to rotate relative to the brake coil, in particular wherein the brake rotor shaft axis is coaxial with the symmetry axis of the brake coil, i.e. brake coil axis,

• wherein the brake coil has a plurality of partial coils, in particular wherein the partial coils are arranged one behind the other in the circumferential direction around the brake coil axis, in particular wherein the partial coils are arranged in a circular arrangement around the brake coil axis,
• wherein the partial coils are arranged one behind the other in the circumferential direction and have a different winding direction to the next adjacent partial coil in the circumferential direction,
• wherein the brake coil has a loop winding forming and/or comprising the partial coils, in particular in which the partial coils are electrically connected in parallel,
• in particular wherein the loop winding is designed to overlap in the circumferential direction, in particular wherein a circumferential angle range covered by a respective partial coil overlaps with the circumferential angle range covered by the next adjacent partial coil in the circumferential direction,
• in particular, wherein the arrangement of the partial coils is composed of two partial coil arrangements, wherein the partial coils are constructed in the same way with the exception of the winding direction and the arrangements are rotated relative to one another in the circumferential direction, wherein the circumferential angular offset in the circumferential direction is half the angular distance between two partial coils which are next adjacent in the circumferential direction.

The advantage here is that the loop winding can be manufactured in a simple manner and, in addition, a resulting circular current can be avoided and therefore the stray field is negligible.

In an advantageous embodiment, the loop winding is composed of separately wound partial coils. The advantage here is that it enables simple production.

In an advantageous embodiment, the partial coils closest to each other in the circumferential direction are arranged in different axial areas. The advantage here is that the windings can overlap in the circumferential direction and thus a large number of partial coils can be arranged in the circumferential direction.

In an advantageous embodiment, the sub-coils that are next to each other in the circumferential direction cover the same axial area. The advantage here is that an overlapping arrangement can be carried out, in particular an oblique arrangement of each sub-coil in the circumferential direction and in the axial direction.

• insbesondere wobei die Teilspulen auf demselben Radialabstand angeordnet sind. Von Vorteil ist dabei, dass eine einfache Herstellung einer hochsymmetrischen Bremsspule ausführbar ist.

Important features of the electromagnetically actuated brake are that the partial coils are regularly spaced from each other in the circumferential direction,

• in particular, the partial coils are arranged at the same radial distance. The advantage here is that a highly symmetrical brake coil can be easily manufactured.

In an advantageous embodiment, the partial coils are axially oriented, i.e. the magnetization direction generated by the respective partial coil winding The direction of the current is oriented axially, i.e. perpendicular to the circumferential direction and/or parallel to the axis of symmetry of the brake coil and/or parallel to the brake rotor shaft axis. The advantage here is that an armature disk that is axially movable but non-rotatably connected to the brake coil can be attracted by the magnetic field generated by the partial coils against the spring force generated by spring elements, which also acts on the armature disk. If the current supply to the partial coils fails, the armature disk is pressed by the spring elements onto a brake pad carrier of a brake disk that is non-rotatably but axially movable with the brake rotor shaft, so that the brake disk in turn is pressed with its additional brake pad arranged on the side facing away from the armature disk onto a braking surface that is firmly connected to the brake coil.

In an advantageous embodiment, each winding has several winding wires that are at least partially parallel, so that the number of turns of each partial coil is greater than 1. The advantage here is that a strong magnetic field can be generated.

Important features of the coil arrangement for an electromagnet, in particular for an electromagnetically actuated brake, are that the coil arrangement has partial coils.

The advantage here is that the stray field can be reduced by dividing the brake coil into sub-coils.

Further advantages arise from the subclaims. The invention is not limited to the combination of features in the claims. The person skilled in the art will recognize further useful combination options of claims and/or individual claim features and/or features of the description and/or the figures, in particular from the task and/or the task arising from a comparison with the prior art.

• In der 1 ist eine Draufsicht auf eine erfindungsgemäße Bremsspule gezeigt, die aus in Schleifenwicklung zusammengesetzten Einzelspulen besteht.
• In der 2 ist eine Draufsicht auf eine andere erfindungsgemäße Bremsspule gezeigt, deren Teilspulen in verschiedenen axialen Bereichen angeordnet ist.
• In der 3 ist eine Draufsicht auf eine andere erfindungsgemäße Bremsspule gezeigt, deren Teilspulen überlappend angeordnet sind.
• In der 4 ist eine Draufsicht auf eine erste Lage einer anderen erfindungsgemäßen Bremsspule gezeigt, deren Teilspulen mittels einer in der Lage, also in einem ersten axialen Bereich, angeordneten Wellenwicklung erzeugt sind.
• In der 5 ist eine Draufsicht auf eine zweite Lage der Bremsspule nach 4 gezeigt, wobei die Teilspulen mittels einer in der zweiten Lage, also in einem zweiten zum ersten unterschiedlichen axialen Bereich, angeordneten Wellenwicklung erzeugt sind.
• In der 6 ist eine Draufsicht auf die aus der ersten und zweiten Lage der 4 und 5 zusammengesetzte Bremsspule gezeigt.
• In der 7 ist ein Wickelschema zur 1 gezeigt, das aber auch auf die anderen Ausführungsbeispiele mit Schleifenwicklung anwendbar ist. Dabei ist allerdings effektiv ein Restkreisstrom vorhanden.
• In der 8 ist ein alternatives Wickelschema gezeigt, das im Unterschied zur 7 effektiv keinen Restkreisstrom aufweist.
• In der 9 sind die Wickelschemata der Wellenwicklungen im oberen Teil der 9 gezeigt, deren Zusammensetzung im unteren Teil gezeigt ist.

The invention will now be explained in more detail with the aid of illustrations:

• In the 1 is a plan view of a brake coil according to the invention, which consists of individual coils assembled in loop winding.
• In the 2 a plan view of another brake coil according to the invention is shown, the partial coils of which are arranged in different axial regions.
• In the 3 a plan view of another brake coil according to the invention is shown, the partial coils of which are arranged overlapping.
• In the 4 a plan view of a first layer of another brake coil according to the invention is shown, the partial coils of which are produced by means of a wave winding arranged in the layer, i.e. in a first axial region.
• In the 5 is a plan view of a second layer of the brake coil according to 4 shown, wherein the partial coils are produced by means of a wave winding arranged in the second layer, i.e. in a second axial region different from the first.
• In the 6 is a top view of the first and second layer of the 4 and 5 composite brake coil shown.
• In the 7 is a winding pattern for 1 shown, but this can also be applied to the other embodiments with loop winding. However, there is effectively a residual circuit current.
• In the 8th An alternative winding scheme is shown, which in contrast to the 7 effectively has no residual circuit current.
• In the 9 are the winding schemes of the wave windings in the upper part of the 9 whose composition is shown in the lower part.

As in 1 As shown, the brake coil of the electromagnetically actuated brake according to the invention is arranged from several partial coils evenly spaced from one another in the circumferential direction.

The partial coils have the same radial distance to the brake rotor shaft axis.

When energized, the magnetic field generated attracts a ferromagnetic armature disk that is axially movable, axially spaced from the partial coils and fixed to the housing in a rotationally fixed manner, so that an opposing spring force of spring elements is overcome and the armature disk is lifted off an axially movable brake pad carrier with brake pads arranged axially on both sides that is connected to the brake rotor shaft in a rotationally fixed manner. In this operating state, the brake is released and the braking torque is not effective. When the energization is switched off, the magnetic attraction force is eliminated and the armature disk is pressed by the spring force of spring elements against the brake pad carrier with brake pads arranged axially on both sides, which in turn is pressed against a braking surface that is firmly connected to the housing and thus to the coil body of the brake coil.

Each partial coil generates a magnetic field that is opposite to the magnetic field of the partial coil closest to it in the circumferential direction. This means that there is alternating magnetization in the circumferential direction, since the magnetic poles formed by the partial coils are opposite to their closest neighbor in the circumferential direction.

The number of partial coils is even. The partial coils are arranged in the same axial area. Therefore, the partial coil windings form a flat arrangement.

As in 2 As shown, the partial coils that generate the magnetic field oriented in the axial direction, i.e. the first type of partial coils, are arranged in a different axial area than those partial coils that generate the magnetic field oriented opposite to the axial direction, i.e. the second type of partial coils. Thus, a first type of partial coil is arranged axially above the other type of partial coil. The winding direction of the partial coils of the first type is the same as one another. The winding direction of the partial coils of the second type is also the same as one another.

Thus, a higher winding density can be achieved.

In contrast to the embodiment according to 1 Due to the axially different arrangement of the two types of partial coils in the circumferential direction, a higher number of partial coils can be provided or wider partial coils in the circumferential direction.

As in 2 As shown, the arrangement of the first and second partial coils is constructed in the same way with the exception of the winding direction and is rotated relative to one another in the circumferential direction. This circumferential angular offset in the circumferential direction is preferably essentially half the angular distance between two partial coils that are next to each other in the circumferential direction. Thus, a partial coil of the first type is always next to a partial coil of the second type.

As in 3 shown, an overlapping arrangement of the partial coils is shown as an alternative embodiment according to the invention. In contrast to the embodiment according to 2 The first and second types of partial coils are arranged in the same axial region, whereby they are arranged in an overlapping manner. In particular, a circumferential angle range covered by a respective partial coil overlaps with the circumferential angle range covered by the next adjacent partial coil in the circumferential direction.

Again, the arrangement of the first and second partial coils is constructed in the same way, with the exception of the winding direction, and is rotated relative to one another in the circumferential direction. The circumferential angle offset in the circumferential direction is preferably essentially half the angular distance between two partial coils that are next to each other in the circumferential direction. Thus, a partial coil of the first type is always next to a partial coil of the second type.

In the 7 a winding diagram associated with the loop winding structure is shown, with two lines running in the circumferential direction on the radial inside of a pole, i.e. a partial coil of the first type, and three lines running in the opposite direction on the radial inside of the next adjacent pole in the circumferential direction. The lines on the radial outside of the adjacent poles also have a different number and direction. This creates an interrupted resulting circular current on the radial inside and on the radial outside.

Therefore, in 8th An improved winding scheme has been shown that does not result in circular currents. This is because on the radial inner side of the poles there are always three lines in or opposite to the circumferential direction. In contrast to the 7 are at the 8th From each partial coil winding to the next adjacent winding, not just one winding wire, but two are led.

In other embodiments, one of three different number of turns N can be implemented for the partial coils. In this case, N lines are routed on the radial inside and on the radial outside. Likewise, N lines are routed on the sides facing the adjacent partial coil, so that a resulting current runs through 2N lines there. Thus, there is no resulting circular current on the radial inside and no resulting circular current on the radial outside.

In the 4 The arrangement shown represents a wave winding. The winding wire 40 is laid circumferentially, with a meandering course. Thus, the radial distance of the winding wire is a periodic function of the circumferential angle. The 4 The function shown essentially corresponds to a rectangular function, whereby the corners of the rectangle are rounded for manufacturing reasons.

In the 5 shown wave winding differs from that in 4 shown by inverting it to the rectangular function there , where the inversion is carried out with respect to a circle whose radial distance corresponds to the mean value of the maximum and minimum radial distance of the function. Thus, the wave winding has 4 the minimum radial clearance value at those circumferential angle values for which the shaft arrangement according to 5 has the maximum radial distance value.

In the embodiment according to 6 the wave winding is 4 arranged in a first axial region and the wave winding according to 5 in a different axial region which is spaced from the first or at most adjacent to it.

As in 6 As shown, no resulting circular current is caused in this arrangement, since in the plan view from the axial direction each magnetic pole formed is surrounded by a respective circular current. A current in the circumferential direction around the axis, i.e. the center of the illustration according to 6 , flowing circulating current is not present, although the first and second wave windings carry a current around the center. Because every 6 The pole shown, which has four essentially straight sides, is surrounded by three sides of one of the wave windings and one side of the other wave windings.

In 9 is this to the 4 , 5 , and 6 The corresponding winding scheme is shown, whereby the winding scheme 91 for 4 , the winding pattern 92 for 5 and the winding pattern 93 for 6 The abscissa represents the circumferential angle direction. The topmost of the winding schemes is the 4 and by turning it by an angle it goes into the middle, to the 5 The twist angle corresponds to half the period length of the periodic function.

As shown in the winding patterns of the 9 shown, a number of turns of three is implemented. In this case, three lines run in the circumferential direction on the radial inner side of each pole and three lines run in the opposite direction on the radial inner side of the pole closest to this pole in the circumferential direction. Similarly, the three lines on the radial outer side are also run in opposite directions to each other. Thus, no resulting circular current is generated on either the radial inner side or the radial outer side. In a further embodiment according to the invention, a different number can be implemented instead of the number of turns of three.

List of reference symbols

1

Partial coil with axially oriented winding direction

2

Partial coil with winding direction opposite to the axial direction

21

Partial coil with axially oriented winding direction

22

Partial coil with winding direction opposite to the axial direction

31

Partial coil with axially oriented winding direction

32

Partial coil with winding direction opposite to the axial direction

40

Winding wire, especially current path

41

Partial coil with axially oriented winding direction

42

Partial coil with winding direction opposite to the axial direction

50

Winding wire, especially current path

51

Partial coil with axially oriented winding direction

52

Partial coil with winding direction opposite to the axial direction

91

Wrapping scheme

92

Wrapping scheme

93

Wrapping scheme

Claims (10)

Electromagnetically actuated brake with a brake coil, wherein the brake coil has a brake rotor shaft which is arranged so as to be rotatable relative to the brake coil, wherein the brake rotor shaft axis is coaxial with the axis of symmetry of the brake coil, i.e. the brake coil axis, wherein the brake coil has a plurality of partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52), wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction around the brake coil axis, wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged in a circular arrangement around the brake coil axis, wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction and have a different winding direction to the respective next adjacent partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) in the circumferential direction, so that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) with a first winding direction form a first type and the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) with the opposite winding direction form a second type, characterized in that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) by at least one first wave winding and a second wave winding is formed, each of the two wave windings being laid out circumferentially, the radial distance of each of the two wave windings being a periodic function of the circumferential angle, - the first and second wave windings being of identical design but offset from one another in the circumferential direction, - and/or the second wave winding being inverted to the first with respect to a circle whose radial distance corresponds to the mean value of the maximum and minimum radial distance of the function, the periodic function being a rectangular function with rounded corner regions, the first wave winding being arranged in a first axial region and the second wave winding being arranged in a different axial region which is spaced from the first axial region or at most borders on it but does not overlap. Electromagnetically operated brake according to Claim 1 , characterized in that each partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) is directly connected to its next adjacent partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) in the circumferential direction via at least two winding wire sections, in particular wherein the winding wire sections each run directly between the partial coil windings without being guided over other partial coil windings. Electromagnetically actuated brake according to at least one of the preceding claims, characterized in that the first shaft winding is arranged in an axial region which differs from the axial region in which the second shaft winding is arranged. Electromagnetically actuated brake with a brake coil, wherein the brake coil has a brake rotor shaft arranged so as to be rotatable relative to the brake coil, wherein the brake rotor shaft axis is coaxial with the axis of symmetry of the brake coil, i.e. brake coil axis, wherein the brake coil has a plurality of partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52), wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction around the brake coil axis, wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged in a circular arrangement around the brake coil axis, characterized in that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged one behind the other in the circumferential direction and have a different winding direction to the respective next adjacent partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) in the circumferential direction, wherein the brake coil has a loop winding which forms and/or encompasses the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52), in which the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are electrically connected in parallel, wherein the loop winding is designed to overlap in the circumferential direction, thus wherein a current generated by a respective partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) overlaps with the circumferential angle range covered in the circumferential direction by the next adjacent partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52), wherein the arrangement of the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) is composed of two partial coil arrangements, wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are constructed in the same way with the exception of the winding direction and the arrangements are rotated relative to one another in the circumferential direction, wherein the circumferential angle offset in the circumferential direction is half the angular distance between two partial coils that are next adjacent in the circumferential direction (1, 2, 21, 22, 31, 32, 41, 42, 51, 52), wherein the sub-coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) closest to each other in the circumferential direction are arranged in different axial regions. Electromagnetically operated brake according to Claim 4 , characterized in that the loop winding is composed of separately wound respective partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52). Electromagnetically operated brake according to Claim 4 or 5 , characterized in that in the circumferential direction, adjacent partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged in different axial regions. Electromagnetically actuated brake according to at least one of the preceding claims, characterized in that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are regularly spaced from one another in the circumferential direction, wherein the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are arranged at the same radial distance. Electromagnetically actuated brake according to at least one of the preceding claims, characterized in that the partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) are axially oriented, i.e. the magnetization direction generated by the respective partial coil winding is axially oriented, i.e. perpendicular to the circumferential direction and/or parallel lel to the symmetry axis of the brake coil and/or parallel to the brake rotor shaft axis. Electromagnetically actuated brake according to at least one of the preceding claims, characterized in that each winding has a plurality of winding wires which are guided parallel at least in sections, so that the number of turns of each partial coil (1, 2, 21, 22, 31, 32, 41, 42, 51, 52) is greater than 1. Coil arrangement for an electromagnet, for an electromagnetically actuated brake according to at least one of the preceding claims, characterized in that the coil arrangement has partial coils (1, 2, 21, 22, 31, 32, 41, 42, 51, 52).

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